Finding the Fourth Proportional to 28,293.30, 39,058.61 and 17,686.35

Step by Step Solution

1. Step 1: Write the proportion equation
   28,293.30 : 39,058.61 = 17,686.35 : x
2. Step 2: Convert to fraction form
   28,293.30/39,058.61 = 17,686.35/x
3. Step 3: Cross multiply
   28,293.30x = 39,058.61 × 17,686.35
4. Step 4: Simplify right side
   28,293.30x = 690,804,158.54
5. Step 5: Solve for x
   x = 690,804,158.54/28,293.30
6. Step 6: Final answer
   x = 24,415.82